Alphatec Holdings Inc. (ATEC) Insider Trading

Last 12 months

Insiders bought $2.01M and sold $48.8M on the open market.

36% of the selling was scheduled in advance under 10b5-1 plans. Director David R Pelizzon sold $5.3M on Dec 9, 2025 outside a plan.

Net open-market

−$46.8M

2 buys · 28 sales

Under a 10b5-1 plan

36%

of the value sold

Insiders who bought / sold

2 / 10

executives and directors

Last open-market buy

Sep 2026

Sep 10, 2026

Get an email when ATEC's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 10	Patrick Miles CEO	Bought	115,000	$8.81	$1.01M	1.9%	Form 4
Aug 5	Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC.	Sold10b5-1 plan	8,168	$9.65	$79k	1.3%	Form 4
Jun 11	Karen K McGinnis Director	Sold10b5-1 plan	6,050	$8.01	$48k	6.0%	Form 4
May 7 – 11	Keith Valentine Director	Bought 3 parts	135,000	$7.38 average	$996k	139%	Form 4
Mar 13	Scott Lish CHIEF OPERATING OFFICER	SoldNo plan	260,535	$12.30	$3.2M	24%	Form 4
Mar 13	John Todd Koning CHIEF FINANCIAL OFFICER	Sold10b5-1 plan	79,789	$12.36	$986k	12%	Form 4
Mar 11	David Sponsel EVP, SALES	Sold10b5-1 plan	163,452	$12.52	$2.05M	24%	Form 4
Mar 6 – 9	Craig E Hunsaker EVP, PEOPLE & CULTURE	Sold10b5-1 plan 2 parts	116,367	$12.38 average	$1.44M	6.3%	Form 4
Mar 5	Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC.	Sold10b5-1 plan	88,835	$12.49	$1.11M	14%	Form 4
Feb 5	David Sponsel EVP, SALES	Sold10b5-1 plan	60,425	$13.79	$833k	15%	Form 4
Feb 3	Craig E Hunsaker EVP, PEOPLE & CULTURE	Sold10b5-1 plan	37,358	$14.71	$550k	3.1%	Form 4
Jan 5	Patrick Miles CEO	Sold10b5-1 plan	100,000	$21.01	$2.1M	1.8%	Form 4
Dec 16, 2025	Scott Lish CHIEF OPERATING OFFICER	Sold10b5-1 plan	19,900	$19.64	$391k	3.0%	Form 4
Dec 16, 2025	David R Pelizzon Director	SoldNo plan	250,000	$19.66	$4.92M	2.3%	Form 4
Dec 11, 2025	David M Demski Director	SoldNo plan	30,000	$21.20	$636k	7.0%	Form 4
Dec 10, 2025	David Sponsel EVP, SALES	Sold10b5-1 plan	21,106	$20.79	$439k	4.6%	Form 4
Dec 10, 2025	Craig E Hunsaker EVP, PEOPLE & CULTURE	SoldNo plan	32,584	$20.84	$679k	2.5%	Form 4
Dec 8, 2025 – Dec 9, 2025	Squadron Capital LLC Large holder	SoldNo plan 2 parts	250,000	$21.18 average	$5.3M	2.3%	Form 4
Dec 8, 2025 – Dec 9, 2025	David R Pelizzon Director	SoldNo plan 2 parts	250,000	$21.18 average	$5.3M	2.2%	Form 4
Dec 8, 2025 – Dec 9, 2025	Squadron Capital Holdings LLC Large holder	SoldNo plan 2 parts	250,000	$21.18 average	$5.3M	2.3%	Form 4
Dec 8, 2025 – Dec 9, 2025	Jennifer N. Pritzker Large holder	SoldNo plan 2 parts	250,000	$21.18 average	$5.3M	2.3%	Form 4
Dec 8, 2025	David Sponsel EVP, SALES	SoldNo plan	988	$21.45	$21k	0.2%	Form 4
Dec 5, 2025	Scott Lish CHIEF OPERATING OFFICER	SoldNo plan	10,875	$21.47	$233k	1.6%	Form 4
Dec 5, 2025	Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC.	Sold10b5-1 plan 2 parts	22,889	$21.47 average	$492k	6.2%	Form 4
Dec 1, 2025	Patrick Miles CEO	Sold10b5-1 plan	100,000	$22.11	$2.21M	1.8%	Form 4
Nov 24, 2025	Jennifer N. Pritzker Large holder	SoldNo plan	250,000	$20.62	$5.16M	2.2%	Form 4
Nov 24, 2025	Squadron Capital Holdings LLC Large holder	SoldNo plan	250,000	$20.62	$5.16M	2.2%	Form 4
Nov 24, 2025	Squadron Capital LLC Large holder	SoldNo plan	250,000	$20.62	$5.16M	2.2%	Form 4
Nov 24, 2025	David R Pelizzon Director	SoldNo plan	250,000	$20.62	$5.16M	2.2%	Form 4
Nov 20, 2025	Scott Lish CHIEF OPERATING OFFICER	SoldNo plan	25,000	$19.80	$495k	3.6%	Form 4
Nov 20, 2025	Tyson Eliot Marshall GENERAL COUNSEL & CORP. SEC.	SoldNo plan	70,000	$19.51	$1.37M	16%	Form 4
Nov 12, 2025	Squadron Capital LLC Large holder	SoldNo plan	250,000	$20.80	$5.2M	2.2%	Form 4
Nov 12, 2025	David R Pelizzon Director	SoldNo plan	250,000	$20.80	$5.2M	2.1%	Form 4
Nov 12, 2025	Squadron Capital Holdings LLC Large holder	SoldNo plan	250,000	$20.80	$5.2M	2.2%	Form 4
Nov 12, 2025	Jennifer N. Pritzker Large holder	SoldNo plan	250,000	$20.80	$5.2M	2.2%	Form 4
Nov 3, 2025	Jeffrey P Rydin Director	SoldNo plan	200,000	$19.32	$3.86M	34%	Form 4
Nov 3, 2025	Patrick Miles CEO	Sold10b5-1 plan	100,000	$18.96	$1.9M	1.7%	Form 4
Oct 31, 2025	Craig E Hunsaker EVP, PEOPLE & CULTURE	Sold10b5-1 plan	100,000	$19.95	$2M	7.2%	Form 4
Oct 24, 2025	David Sponsel EVP, SALES	Sold10b5-1 plan	70,000	$16.18	$1.13M	13%	Form 4
Oct 1, 2025	Patrick Miles CEO	Sold10b5-1 plan	100,000	$13.96	$1.4M	1.7%	Form 4

Sep 10
Patrick Miles
CEO · bought 115,000 at $8.81
$1.01M
1.9% of stake
Aug 510b5-1 plan
Tyson Eliot Marshall
GENERAL COUNSEL & CORP. SEC. · sold 8,168 at $9.65
$79k
1.3% of stake
Jun 1110b5-1 plan
Karen K McGinnis
Director · sold 6,050 at $8.01
$48k
6.0% of stake
May 7 – 11
Keith Valentine
Director · bought 135,000 at avg $7.38
$996k
139% of stake
Mar 13No plan
Scott Lish
CHIEF OPERATING OFFICER · sold 260,535 at $12.30
$3.2M
24% of stake
Mar 1310b5-1 plan
John Todd Koning
CHIEF FINANCIAL OFFICER · sold 79,789 at $12.36
$986k
12% of stake
Mar 1110b5-1 plan
David Sponsel
EVP, SALES · sold 163,452 at $12.52
$2.05M
24% of stake
Mar 6 – 910b5-1 plan
Craig E Hunsaker
EVP, PEOPLE & CULTURE · sold 116,367 at avg $12.38
$1.44M
6.3% of stake
Mar 510b5-1 plan
Tyson Eliot Marshall
GENERAL COUNSEL & CORP. SEC. · sold 88,835 at $12.49
$1.11M
14% of stake
Feb 510b5-1 plan
David Sponsel
EVP, SALES · sold 60,425 at $13.79
$833k
15% of stake
Feb 310b5-1 plan
Craig E Hunsaker
EVP, PEOPLE & CULTURE · sold 37,358 at $14.71
$550k
3.1% of stake
Jan 510b5-1 plan
Patrick Miles
CEO · sold 100,000 at $21.01
$2.1M
1.8% of stake
Dec 16, 202510b5-1 plan
Scott Lish
CHIEF OPERATING OFFICER · sold 19,900 at $19.64
$391k
3.0% of stake
Dec 16, 2025No plan
David R Pelizzon
Director · sold 250,000 at $19.66
$4.92M
2.3% of stake
Dec 11, 2025No plan
David M Demski
Director · sold 30,000 at $21.20
$636k
7.0% of stake
Dec 10, 202510b5-1 plan
David Sponsel
EVP, SALES · sold 21,106 at $20.79
$439k
4.6% of stake
Dec 10, 2025No plan
Craig E Hunsaker
EVP, PEOPLE & CULTURE · sold 32,584 at $20.84
$679k
2.5% of stake
Dec 8, 2025 – Dec 9, 2025No plan
Squadron Capital LLC
Large holder · sold 250,000 at avg $21.18
$5.3M
2.3% of stake
Dec 8, 2025 – Dec 9, 2025No plan
David R Pelizzon
Director · sold 250,000 at avg $21.18
$5.3M
2.2% of stake
Dec 8, 2025 – Dec 9, 2025No plan
Squadron Capital Holdings LLC
Large holder · sold 250,000 at avg $21.18
$5.3M
2.3% of stake
Dec 8, 2025 – Dec 9, 2025No plan
Jennifer N. Pritzker
Large holder · sold 250,000 at avg $21.18
$5.3M
2.3% of stake
Dec 8, 2025No plan
David Sponsel
EVP, SALES · sold 988 at $21.45
$21k
0.2% of stake
Dec 5, 2025No plan
Scott Lish
CHIEF OPERATING OFFICER · sold 10,875 at $21.47
$233k
1.6% of stake
Dec 5, 202510b5-1 plan
Tyson Eliot Marshall
GENERAL COUNSEL & CORP. SEC. · sold 22,889 at avg $21.47
$492k
6.2% of stake
Dec 1, 202510b5-1 plan
Patrick Miles
CEO · sold 100,000 at $22.11
$2.21M
1.8% of stake
Nov 24, 2025No plan
Jennifer N. Pritzker
Large holder · sold 250,000 at $20.62
$5.16M
2.2% of stake
Nov 24, 2025No plan
Squadron Capital Holdings LLC
Large holder · sold 250,000 at $20.62
$5.16M
2.2% of stake
Nov 24, 2025No plan
Squadron Capital LLC
Large holder · sold 250,000 at $20.62
$5.16M
2.2% of stake
Nov 24, 2025No plan
David R Pelizzon
Director · sold 250,000 at $20.62
$5.16M
2.2% of stake
Nov 20, 2025No plan
Scott Lish
CHIEF OPERATING OFFICER · sold 25,000 at $19.80
$495k
3.6% of stake
Nov 20, 2025No plan
Tyson Eliot Marshall
GENERAL COUNSEL & CORP. SEC. · sold 70,000 at $19.51
$1.37M
16% of stake
Nov 12, 2025No plan
Squadron Capital LLC
Large holder · sold 250,000 at $20.80
$5.2M
2.2% of stake
Nov 12, 2025No plan
David R Pelizzon
Director · sold 250,000 at $20.80
$5.2M
2.1% of stake
Nov 12, 2025No plan
Squadron Capital Holdings LLC
Large holder · sold 250,000 at $20.80
$5.2M
2.2% of stake
Nov 12, 2025No plan
Jennifer N. Pritzker
Large holder · sold 250,000 at $20.80
$5.2M
2.2% of stake
Nov 3, 2025No plan
Jeffrey P Rydin
Director · sold 200,000 at $19.32
$3.86M
34% of stake
Nov 3, 202510b5-1 plan
Patrick Miles
CEO · sold 100,000 at $18.96
$1.9M
1.7% of stake
Oct 31, 202510b5-1 plan
Craig E Hunsaker
EVP, PEOPLE & CULTURE · sold 100,000 at $19.95
$2M
7.2% of stake
Oct 24, 202510b5-1 plan
David Sponsel
EVP, SALES · sold 70,000 at $16.18
$1.13M
13% of stake
Oct 1, 202510b5-1 plan
Patrick Miles
CEO · sold 100,000 at $13.96
$1.4M
1.7% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ATEC, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in ATEC's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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